I just put 2 new seals in my 60 about 2 seasons ago, and the passenger side is leaking. Its a HP 60 drivers side drop. I have my diff cut and rotated up about 15* so I pretty much fill the diff completely with fluid. Because I do that should I plan on replacing the seals every couple years or does anyone have any tips on installing them and sliding the shafts in?? I greased up the inside of the seal before slipping the shaft in, should I do anything else?? I have also seen some new seals that rotate with the axle?? Are these a better option?? Thanks for any help and advice.